I think it's no surprise to learn that I love industrial exhaust fans. And as much as I like my 16" Maspion D blade exhaust fan, I think this smaller fan suits my new workshop a lot better.
This is an Imatsu's low noise exhaust fan, model FA10. I bought it slightly used for about 20% of its original pricetag which sounds like a great deal, but considering how cheap these things cost to manufacture, it's still a big ask IMO. That said, this fan arrived with junk bearings & sun faded paint. The bearings in this thing have plastic ball guides. You know those spacer things inside ball bearings to keep the balls spaced evenly? Yeah that part is made of plastic on this fan, and it fell apart the second I took both bearings out. I replaced the bearings with higher quality Japanese bearings which make it sound smooth but also has a slight annoyance which I will discuss later. The paint just needed a bit of wax for it to shine, and now it works & looks (almost)perfect!
I decided to replace the larger Maspion exhaust fan with this because of a big whoopsie I did while my shop was being built. That whoopsie had something to do with the layout of my room & the way my ACs are installed. This left me in need of a fan that is quieter & more energy efficient than the Maspion. Yes I had a speed controller wired to the Maspion when it was still in use, but speed 3 still draws 45 Watts while this fan draws 36 Watts on full blast.
While we're in the topic of power consumption, I think I should mention the fact that the motor on this fan is rated for 36 Watts, and it draws exactly that. It's an interestingly low power draw for a fan built for industrial area, but the downsides are rather large. This cheaply built fan can't start at all if it's windmilling moderately fast in the opposite rotation it runs in & it growls excessively during startup which makes me think the bearing holders or the windings are loose.. The blades was way out of balance when I got it, which explains the nut & bolt on the center of the blades. That was my method of balancing the fan so it won't make rattling noises during use.
Now let's get to why I'm slightly annoyed by this fan. This part of my house has large openings & windows to let air pass easily through the entire house. That means all 3 exhaust fans that have served here likes to windmill. This being the fan that has the deepest pitch & least resistive bearings, it's hard for me to film it in my free times because it's always windy outside. I'm happy that I finally got it done though.
Other than those annoyances, this fan has served me well so far. It's pretty quiet during normal operation which often results in me forgetting to turn it off, airflow is satisfactory & I think it looks a lot better than my previous 16" format. While this fan can't hold a candle to KDK's 60 Watt 30GSC 12" low noise exhaust fan, it's powerful enough to handle the work load I give to it.
#Imatsu's #ExhaustFan
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